oeqa qemurunner.py: try to avoid reading one character at a time

Read from serial console with a small delay to bundle data to e.g.
full lines. Reading one character at a time is not needed and causes
busy looping.

Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index bce00c696a498495249973ac38c08c78c8bb71a7..05385763acecdb54a872e06a46d3c4f978bbb58e 100644 (file)
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -658,6 +658,8 @@ class QemuRunner:
             except InterruptedError:
                 continue
             if sread:
+                # try to avoid reading single character at a time
+                time.sleep(0.1)
                 answer = self.server_socket.recv(1024)
                 if answer:
                     data += answer.decode('utf-8')